Unverified50% confidenceFactExact time
When a rate limit dimension of an API provider is hit, the provider returns an HTTP 429 error.
1
Sources
50%
Confidence
Long-term
Relevance
10/11/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedHTTP 429 error indicates Too Many Requests; when multiple agents concurrently call the same free API, the server will frequently return this error.75% similarUnverifiedHTTP status code 401 indicates authentication failure, 429 indicates rate limiting has been triggered, and 500 indicates a server-side error.72% similarVerifiedIn HTTP protocol status codes, 2xx indicates success, 4xx indicates client errors, and 5xx indicates server errors.71% similarUnverifiedWhen an API call fails, the error message returned by the server may echo back the content that was sent, including the API key, thereby causing the plaintext key to be written to the log file.68% similarUnverifiedOne API的故障转移机制借鉴了微服务领域的断路器（Circuit Breaker）模式，当渠道返回429或5xx状态码时自动标记为临时不可用67% similar
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